<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
	
	window.onload = function(){
		document.getElementById('btn').onclick = function(){
			var con = document.getElementById('con').value;//获得表单的内容
			var reg = /^houdun$/im;
			var r = reg.test(con);
			alert(r);
		}
	}


</script>
</head>

<body>

<input type="button" value="点击验证" id="btn" />
<br />
<br />
<br />

 <textarea id="con" style="height:300px;"></textarea>


</body>
</html>
